Filter for ARM binaries. More...

#include "simple_private.h"

Functions
static size_t	arm_code (void simple lzma_attribute((__unused__)), uint32_t now_pos, bool is_encoder, uint8_t buffer, size_t size)

static lzma_ret	arm_coder_init (lzma_next_coder next, const lzma_allocator allocator, const lzma_filter_info *filters, bool is_encoder)

lzma_ret	lzma_simple_arm_encoder_init (lzma_next_coder next, const lzma_allocator allocator, const lzma_filter_info *filters)

lzma_ret	lzma_simple_arm_decoder_init (lzma_next_coder next, const lzma_allocator allocator, const lzma_filter_info *filters)

Detailed Description

Filter for ARM binaries.

Definition in file arm.c.

Function Documentation

◆ arm_code()

static size_t arm_code	(	void *simple	lzma_attribute(__unused__),
		uint32_t	now_pos,
		bool	is_encoder,
		uint8_t *	buffer,
		size_t	size
	)

static

Definition at line 18 of file arm.c.

 {
     size_t i;
     for (i = 0; i + 4 <= size; i += 4) {
         if (buffer[i + 3] == 0xEB) {
             uint32_t src = ((uint32_t)(buffer[i + 2]) << 16)
                     | ((uint32_t)(buffer[i + 1]) << 8)
                     | (uint32_t)(buffer[i + 0]);
             src <<= 2;
  
             uint32_t dest;
             if (is_encoder)
                 dest = now_pos + (uint32_t)(i) + 8 + src;
             else
                 dest = src - (now_pos + (uint32_t)(i) + 8);
  
             dest >>= 2;
             buffer[i + 2] = (dest >> 16);
             buffer[i + 1] = (dest >> 8);
             buffer[i + 0] = dest;
         }
     }
  
     return i;
 }

References dest, i, and src.

Referenced by arm_coder_init().

◆ arm_coder_init()

static lzma_ret arm_coder_init	(	lzma_next_coder *	next,
		const lzma_allocator *	allocator,
		const lzma_filter_info *	filters,
		bool	is_encoder
	)

static

Definition at line 48 of file arm.c.

 {
     return lzma_simple_coder_init(next, allocator, filters,
             &arm_code, 0, 4, 4, is_encoder);
 }

References allocator, arm_code(), filters, and lzma_simple_coder_init().

Referenced by lzma_simple_arm_decoder_init(), and lzma_simple_arm_encoder_init().

◆ lzma_simple_arm_decoder_init()

lzma_ret lzma_simple_arm_decoder_init	(	lzma_next_coder *	next,
		const lzma_allocator *	allocator,
		const lzma_filter_info *	filters
	)

Definition at line 66 of file arm.c.

 {
     return arm_coder_init(next, allocator, filters, false);
 }

References allocator, arm_coder_init(), and filters.

◆ lzma_simple_arm_encoder_init()

lzma_ret lzma_simple_arm_encoder_init	(	lzma_next_coder *	next,
		const lzma_allocator *	allocator,
		const lzma_filter_info *	filters
	)

Definition at line 57 of file arm.c.

 {
     return arm_coder_init(next, allocator, filters, true);
 }